A 1 MB dummy BIN file (application/octet-stream) for software tests. Extension: .bin.

Use it to verify upload limits, timeouts, progress bars and storage quotas around 1 MB.

Can I use it commercially?

Yes. Dummy files from DummyFiles.dev are free to use in commercial projects, tests and CI. They contain no third-party copyrighted content.

How was it generated?

The file is generated on download with a target size of 1 MB. No account is required.

Yes. The next size is 2 MB. The largest BIN file here is 5 GB.

Dummy file

Download a 1 MB dummy file. Test file for upload, storage and API tests — fixed size, any format.

Go to generator All BIN sizes

Download the 1 MB BIN and follow the same upload path as your users. Check the file type, extension .bin and stored size.

Fixed-size test files are more repeatable than random files from your computer: every run is 1 MB, every environment matches.

This is a valid BIN of the stated size, generated for testing — not a finished document.

What is this file?: A 1 MB dummy BIN file (application/octet-stream) for software tests. Extension: .bin.
How can I use it?: Use it to verify upload limits, timeouts, progress bars and storage quotas around 1 MB.
Can I use it commercially?: Yes. Dummy files from DummyFiles.dev are free to use in commercial projects, tests and CI. They contain no third-party copyrighted content.
How was it generated?: The file is generated on download with a target size of 1 MB. No account is required.
Are larger files available?: Yes. The next size is 2 MB. The largest BIN file here is 5 GB.